Which character differentiates living things from non-living organisms_____.

1. 1. They are highly organized and complex made of one or more cells and contain genetic material
   2. They live in the same ecosystem.
   3. They are acted upon by the same environment
   4. Both a and b

Lock and Key model was proposed by_____.

1. 1. Robin Williams
   2. Koshland
   3. Emil Fischer
   4. Rudolph Virchow

Approximately _____species of bacteria are known to cause diseases in humans.

1. 1. 50
   2. 100
   3. 150
   4. 200

Pinus Taxus and Picea belong to _____.

1. 1. Gymnosperms
   2. Spheospsida
   3. Filicineae
   4. Angiosperms

The biggest group of invertebrates is_____.

1. 1. Worms
   2. Jelly fish
   3. Insects
   4. All of these

The study of fossils is called?

1. 1. Palaeontology
   2. Environmental Biology
   3. Historical biology
   4. Social biology

Cell wass of Archaeobacteria does not contain_____.

1. 1. Proteins
   2. Peptidoglycan
   3. Glycoproteins
   4. Polysaccharides

Scurvy and beri – beri and caused by the deficiency of_____.

1. 1. Vitamin C and B
   2. Vitamin B and C
   3. Vitamin B and D
   4. Vitamin A and B

Adult birds normally possess only one functional_____.

1. 1. Ureter
   2. Lung
   3. Testis
   4. Ovary

What percentage of light reaching the earth is used in photosynthesis?

1. 1. 2%
   2. 1%
   3. 5%
   4. 10%